Improvement in shingle-machines



dilated tant steld @dimite JOSEPH BAKERQOF SHERIDAN, ASSIGNOR TO HIMSELF AND R. C. HATE- AWAY, OF IONIA, MICHIGAN.

Letters Patent No. 98,334, dated December 28, 1869; aatedated December 9, 1869. d y

IMPROVEMENT IN SHINGLE-MACHINES.

The Schedule referred to in these Letters Patent and makingpa'rt of the same To whom it may concern:

Be it known that I, JOSEPH BAKER,.of Sheridan, in the county of Montcalm, and State of Michigan, have invented a new and -nseful Improvement in Shingle-Machines; and I do declare that the following is a true and accurate description thereof', referen'ce being had to thel accompanying drawings, and to the letters of reference marked thereon, and being a part of this specification.

The nature of this invention relates to an improvement in devices for feeding the holt to the saw in a shingle-mill, from which bolt shingles are sawn, my device being more particularly designed as an improvement on the shingle-machine patented by Jer-rie R. Hall, June 22, 1858.

It consists in a tiltingr frame pivoted` in the feedtable, the under 'sides of said frame being provided i with toothed racks, which alternately and automatically engage with pinions onA the.-forward and backmotion shafts, for slowly feeding the bolt to the saw,

and gigging back swiftly after the shingle is sawn` from the bolt, as'hereinafter more fully shown and set forth.

In the accompanying drawings- Figure l is a perspective view of my improvement, attached to and operated bythe shingle-machine of said Hall, theparts of said machine which are not my invention being shown in red lines Figure 2 is a front elevation of the reciprocating parts, being a cross-section on the line :c :c in

Figure 3, which is a plan View of the under side of my device. f Figure 4 is an elevation of the reversing-gear, being a. section on the line y-y of fig. 3.

Like letters refer to like partsin each/figure.

In said Halls machine, the gigging back is effected by a heavy weight, attached to the feed-table by a cord or chain travelling over a pulley. The. feed-table, when the shingle is sawed from the bolt, is disengaged from the feed-gear by a tripping-device, and is drawn back by the weight, involving a considerable expenditure of power in lifting said weight at each out.

The object of my invention is to dispense with said weight, and to afford a reliable feed-motion with the least expenditure of power. i

In the drawings- Y A represents the mainframe of said Halls machine, provided with longitudinal ways a, upon which travels the feed-table B.

Gis the saw-shaft, from which motion is communicated by a belt to the pulley b on the transverse shaft 1)journaled in the main frame.

A pinion, c, on the shaft D, engaging with a spur- Wbeel, d, on a second transverse shaft, E,communi Gates a slow rotary motion to the latter.

On this shaft E, in the machine referred to, isa

pinion, which communicates a slow forward motion to the feed-table, through a rack on its under side.

vIn the frame of the feed-table B, I pivotlongitndi- 'A -l nally a tilting frame, F, on the under sides of whose longitudinal bars, I secure the toothed racks f f.

On the shaft D, I secure a pinion, G, and a similar pinion, H, on the shaft E, immediately under the racks in the tilting frame. l f

The pinions are of such diameter that when the tilting frame is in a horizontal position, neither of To effect the tilting of the frame F, and cause the l racks to engage with the forward and back feed-pinions,

I journal in said frame the rock-shaftd, in whose under side arefattened spaces to form the cams t' and i', so arranged that when the rockshaft is partially rotated in either direction, the edges of one of the cams will press down the side of the tilting frame underneath it, and throw its rack into gear with the pinion-below, while, by means of the rod vg secured to the `rocker-arm h ofthe rock-shaft, said rock-shaft may be so turned that its cams will cause thev tilting frame to assume a horizontal position, disengaging both its racks from the feed-pinions, when the feed-table will. remain stationary. In one side of the feed-table is 'a groove, J, iig. 2,

in which is laid av slide, K, fig. 4, pressed down by a half-leaf spring, L. t

1n the bottom of the grooveis a slot, l, through v which projects a stop-pin, k, permitting the slide to move the ength of the slot. t,

The rock-shaftl is provided with a feather, M, lig. 4, which engages with one of the angular notches m intheslide K, and as the feed-table moves in either direction,tl1e stop-,pin holding the slide fast, the outer end of the latter is lifted up by the feather M until the other notch engages with it. The angular side of the notch, by the action ofthe spring L, partially rotates the rock-shaft, and thus tilts the frame F, and reverses the feed by throwing one of the racks out and the other in gear with-'the proper pinion.

O is a stop on the main frameagainst which the stop-pin 7c of theslide' strikes, 'in gigging back, to

throw the feed-table in gear for the forward motion; and

N, a lever, provided with notches n, sewing as stops to the stop-pin k, for throwing in gear the rack f' with the pinion G, for gigging back the feed-table.

`The leve-IN is pivoted to the frame, s0 that the travel of the 'feed-table toward the saw may be varied to suit the width of the shingle-bolt, by presenting either of its notches n to the stop-pin k. Vthat I claim as my invention, and desire to seeure by Letters Patent, is

In shingle-machines, the vibrating tilting frame F,

provided with racks fj, the pinons G and H, rockshaft I provided withcams 'i 17', rocker-arm h, and

feather M, the notched slide K provided with stop-Y pin 7c, the rod g,rstop O, and graduated stop-lever N, or their equivalents, when constructed, arranged, and

operating substantially as and for the purposes set t forth. i i

JOSEPH BAKER. Witnesses:

HENRY J SIssEM,

ARBA CHUBB. 

